That question of what things might stand for...

That reminds me of the old joke about the three young female friends meeting for a coffee to catch up with each other's life after three years of not seeing each other.

Number 1: "I am a DINK. You know, double income, no kids..."
Number 2: "I am a Yuppie. You know, young, urban, professional..."
Number 3: "I am a WIFE. You know, wash, iron, f***, etcetera."